1. The Red Eclipse
2. Mikayla
3. Infrequently. This is the first time I've had this particular crash, but I've heard of it from other players. There have been some completely random crashes before, but I have no info on those.
4. I was in Esseles hard mode flashpoint, in the last conversation with officer Haken. We were skipping the conversation, and the game crashed right after activating the hyperdrive.